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@miguelmota
miguelmota / keccak_cli.sh
Last active June 6, 2023 16:16
keccak256 cli
# macOS
brew install sha3sum
# archlinux
yay -S sha3sum
# usage
echo -n hello | keccak-256sum
1C8AFF950685C2ED4BC3174F3472287B56D9517B9C948127319A09A7A36DEAC8 -
@ibraheem4
ibraheem4 / postgres-brew.md
Last active May 1, 2024 09:43 — forked from sgnl/postgres-brew.md
Installing Postgres via Brew (OSX)

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

  1. brew doctor
  2. brew update
@everpeace
everpeace / docker-compose.yml
Last active April 7, 2024 10:00
kafka cluster in docker-compose.
# WARNING: This docker-compose.yml is only for testing purpose.
# Parameters:
# - name: CONFLUENT_PLATFORM_VERSION
# default: 3.0.0
# reference: https://hub.docker.com/u/confluentinc/
# Ports:
# - description: Major ports are exposed to host computer
# - zookeeper: 2181
# kafka1: 9091
# kafka2: 9092
@maurelian
maurelian / console.sol
Last active February 25, 2022 18:44
A JS style console.log() function for solidity.
pragma solidity ^0.4.10;
// Update: Just use HardHat's: https://github.com/nomiclabs/hardhat/blob/master/packages/hardhat-core/console.sol
// Enables event logging of the format `console.log('descriptive string', variable)`,
// without having to worry about the variable type (as long as an event has been declared for that type in the
// Console contract.
contract Console {
event LogUint(string, uint);
@thanasik
thanasik / tx_send_example.go
Created March 27, 2017 20:43
Sending an Ethereum transaction in Go
package main
import (
"fmt"
"math/big"
"context"
"io/ioutil"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/keystore"
@bdd
bdd / quickfiles
Last active April 15, 2023 13:54
FZF_DEFAULT_COMMAND utility for fzf
#!/bin/bash
# FZF_DEFAULT_COMMAND utility for fzf
#
# Tries to use Watchman, Ripgrep (rg), The Silver Searcher (ag) in this order.
# ...or falls back the fzf's Unix default.
#
# TODO:
# - Use 'git ls-files -cmod' in Git repositories
@rodkranz
rodkranz / ReadBigFileAndParse.go
Created January 16, 2017 01:24
Read big file and unmarshal in json
// Package main
// Copyright 2017 Kranz. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
/**
Test read file by chunks
➜ read ll
total 13241936
drwxr-xr-x 5 rlopes staff 170B 16 Jan 01:19 ./
@pokev25
pokev25 / install-tmux.sh
Last active February 8, 2024 07:22 — forked from rothgar/install-tmux
Install tmux 2.8 on centos 7
# Install tmux 2.8 on Centos
# install deps
yum install gcc kernel-devel make ncurses-devel
# cd src
cd /usr/local/src
# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL
curl -LO https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
@momer
momer / sql_resources.md
Last active April 22, 2024 18:07
SQL learning Resources for Beginners

There are a number of good introductory SQL resources available for free and online. There are also some paid resources which I recommend for beginners, that are very effective, and well worth expensing in my opinion.

A couple of notes:

  • I haven’t used all of these resources, but they come with strong recommendations around the web or myself/my peers.
  • You absolutely don’t need to use every single resource. Find a couple that work for you, and go to town.
  • You can always reach out to me if you have questions. I always paste this online when people are new to asking very technical questions – it’s not meant to be snarky – it's a gentle guide on how to compose your questions and gather necessary resources in order to best give technical people the information needed to get a quick/effective response: http://www.mikeash.com/getting_answers.html

Video/Class/Mini-course based:

  1. Stanford Self-paced ‘Database’ course
  • The original Coursera